Abstract
Energy harvesters generate power only when ambient energy is available, and power loss is significant when the harvester does not produce energy and its power management circuit is still turned on. This paper proposes a new high-efficiency power management circuit for intermittent vibration energy harvesting. The proposed circuit is unique in terms of autonomous power supply switch between harvester and storage device (battery), as well as self-start and control of the operation mode (between active and sleep modes). The self-start controller saves power during an inactive period and the impedance matching concept enables maximum power transfer to the storage device. The proposed circuit is prototyped and tested with an intermittent vibration energy harvester. Test results found that the daily energy consumption of the proposed circuit is smaller than that of the resistive matching circuit: 0.75 J less in sleep mode and 0.04 J less in active mode with self-start.
Highlights
The operation and maintenance (O&M) cost is very high for wind energy and it makes wind energy difficult to be economically competitive energy sources [1,2,3]
An electromagnetic energy harvesting system can be mounted within the blade and does not affect blade aerodynamics, but it should be designed as compact, not to affect the blade motion due to its heavy weight [12,13]
This paper presents a piezoelectric energy harvesting system for a wind turbine blade monitoring, considering intermittent kinematic energy from the wind turbine blade
Summary
The operation and maintenance (O&M) cost is very high for wind energy and it makes wind energy difficult to be economically competitive energy sources [1,2,3]. The predictive maintenance system for a nacelle (central unit) has been well established, but the one for a turbine blade is very challenging because of the lack of proper power supply. Wired power is difficult to use because the long cables (up to 80 m) require additional maintenance and possibly attract lightning. A self-powered wireless monitoring system is a promising solution for sustainable wind turbine blade monitoring. The design of an efficient vibrational energy harvesting system (electromagnetic, piezoelectric) is still challenging because it does not effectively capture random vibrations in a wind turbine blade [14,15]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
